Well, I didn't do any better with the background on these, but here they are anyway. The perch seems to be a dead stick and pickleweed (Salicornia). This individual has clean wide white fringes on the wing feathers, and pointed buff tips to the greater and lesser secondary coverts--forming the wingbars. Thus, I believe this is a juvenile bird just a few weeks old. Adults would have older, faded, worn wing and tail feathers that grew in last fall.
|Black Phoebe. Oceanside, California. May 24, 2015. Greg Gillson.|